![]() The cut of “ brake by wire” deprived the Mercedes drivers of all braking power.Īdvertised like this, one might believe that this system does not present many advantages. In 2015, at the end of the Bahrain Grand Prix, both Mercedes suffered a simultaneous electronic braking system failure, caused by adjustments intended to improve tire performance. Aficionados may remember the 2014 edition of the Canadian Grand Prix, where the two Mercedes F1 cars (driven by Lewis Hamilton and Nico Rosberg) suffered from an MGU-K failure (for Motor Generator Unit Kinetica kind of regenerative brake which converts kinetic energy into electricity, editor’s note), which caused Lewis Hamilton’s rear discs to rupture and his retirement. Let’s go back ten years in F1, to the “good times” some would say, when a certain Lewis Hamilton crushed the competition. This configuration is similar to the IBS system previously explained, with the notable difference of the mini hydraulic circuit dedicated to the rear brakes. The computer then takes control of an actuator located on another hydraulic circuit, specific to the rear braking system. This pressure is measured by a sensor, which transmits the information to the computer. In summary, the brake pedal is connected to a master cylinder which generates pressure in a closed circuit. On Formula 1 cars, the rear braking system has similarities with that of the front brakes, but with one particularity: the potentiometer is made up of a mini hydraulic circuit. There was also some in Formula 1, which also served as a bit of an open-air laboratory for this technology. There were some failures in particular on some of the cars sold, with difficult braking. In fact, it’s a little different, because there were a few misses… The importance of motorsport Hydraulic fluid is routed to the ABS/ESP box, where pressure distribution and regulation are managed.īasically, this system must offer more precise and efficient braking depending on the force applied to the pedal. Instead of a direct connection, the computer controls an electro-hydraulic module, thus triggering the appropriate braking pressure for each wheel. This approach is reminiscent of the operation of a game pedal in a video simulator. In other words, the brake pedal acts more like an electronic interface. Technically, this potentiometer tells the ECU how deep the pedal is depressed, allowing the electro-hydraulic module controlled by the ECU to take over braking by adjusting the pressure for each wheel, depending on the force exerted on the pedal. ![]() To be able to view it, you must accept the use carried out by YouTube with your data which may be used for the following purposes: allowing you to view and share content with social media, promoting the development and improvement of products from Humanoid and its partners, display personalized advertisements to you in relation to your profile and activity, define a personalized advertising profile, measure the performance of advertisements and content on this site and measure the audience of this site (find out more more) This content is blocked because you have not accepted cookies and other trackers. However, it took several years before it became popular, and especially before manufacturers developed this system on a larger scale and without a hydraulic system. This system marked, as it were, the beginning of a revolution in terms of compactness and precision of braking pressure regulation thanks to an electro-hydraulic approach. It was therefore in 2001 that the Japanese firm introduced the system “Electronically Controlled Brake” (ECB) in the Estima and Alphard, a minivan for the first, a van for the second, two models that we have never seen in France. ![]() And who was the pioneer of the hybrid car at that time? Toyota. This coincides with the debut of hybrid cars. In fact, you have to go back to the early 2000s to have a flange of this “electronic” braking system. To experiment with these new features, the best laboratory is obviously motorsport, and the technology that we are going to talk to you about today, namely the system brake by wire, was tested in Formula 1 before becoming “democratic” on some of our modern cars.įinally, this last statement is not entirely true. The most glaring example is undoubtedly Tesla’s semi-autonomous driving, at the cutting edge five years ago and today almost relegated to second place due, in particular because of safety standards that are sometimes very ( too much?) restrictive.Įach technological development in a car, especially when it concerns user safety, is subject to analysis by the legislator. ![]() So of course, automotive is one of the most regulated industries in the world, which explains in particular a slower evolution compared to others.
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